MK 25 DIN Oring Question

[halocline]

Hi guys, just wanna ask for the o ring on the inside portion of the din retainer knob, where should the oring go on?
There are 2 slots there (as in the pic, which I screenshot drom the board since I wasn't able to find a clear picture showing the slots), not sure which one should be the correct one.
And would be nice if someone could explain why there are 2 slots on the din retainer knob

Thanks in advance!

SP replaced old DIN and yoke retainers with the 'universal' retainer after the MK20 over-torque-body-splitting debacle. The o-ring goes on the end of the retainer for the MK25, it goes on the side for the MK2 (I think, it's been a while). I suspect they only wanted to produce one retainer for all their models.